Worldwide evidence of a unimodal relationship between productivity and plant species richness

Here, by using data from coordinated surveys conducted throughout grasslands worldwide and comprising a wide range of site productivities, we provide evidence in support of the HBM pattern at both global and regional extents. The relationships described here provide a foundation for further research into the local, landscape, and historical factors that maintain biodiversity. Usage notes raw plot data from globally distributed sites fraser_plotdata.csv R script for within_site_GLMs_Fig2A_TableS2 within_site_GLMs_Fig2A_TableS2.R R script for Table_1_analyses_FigS1 Table_1_analyses_FigS1.R R script for varied_grain_analyses_FigS2 varied_grain_analyses_FigS2.R R script for HBmodels_FigS3 HBmodels_FigS3.R R script for max_richness_FigS4 max_richness_FigS4.R R script for within_site_GLMs_reduced_data_Figs_S5_2B_S6 within_site_GLMs_reduced_data_Figs_S5_2B_S6.R